參數(shù)資料
型號(hào): μPD9210FGC-7EA
廠商: NEC Corp.
英文描述: USB Host Controller(USB主控制器)
中文描述: USB主機(jī)控制器(的USB主控制器)
文件頁(yè)數(shù): 74/95頁(yè)
文件大?。?/td> 423K
代理商: ΜPD9210FGC-7EA
CHAPTER 5 REGISTER INFORMATION
74
5.2.2 Overview of legacy support registers
Read/Write
Register
Memory Address
Offset
I/O Address
HCD
Comment
HceControl
100h
R/W
This register is used to transmit various types of status
information such as setting emulation hardware as valid,
and controlling it.
10Ch
R/W
HceStatus
64h
R
This is the legacy status register for emulation. Input from
port 64h indicates the current value of HceStatus without
causing other operations.
104h
R/W
60h
W
HceInput
64h
W
This is the legacy input buffer register for emulation.
Output to port 60h sets “1” to InputFull and “0” to CmdData
in the HceStatus register.
Output to port 64h sets “1” to InputFull and CmdData in
the HceStatus register.
108h
R/W
HceOutput
60h
R
This is the legacy output buffer register for emulation in
which software writes to a keyboard or mouse device.
Input from port 60h sets “0” to OutputFull in the HceStatus
register.
Remark
When emulation is enabled (valid), the HceStatus, HceInput, and HceOutput registers can be accessed
via I/O addresses 60h and 64h.
Register: HceInput
Read/Write
Field
bit
HCD
Value
(Default)
Comment
InputData
7 : 0
R/W
Xh
This bit retains the data that is written to I/O ports 60h and
64h when emulation is enabled.
Reserved
31 : 8
Xh
Reserved
Register: HceOutput
Read/Write
Field
bit
HCD
Value
(Default)
Comment
OutputData
7 : 0
R/W
Xh
This bit retains the data that is returned when the
application software reads from port 60h and emulation is
enabled.
Reserved
31 : 8
Xh
Reserved
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